ASTRO VA-1842 - ACP Packet

Chapter 4 Source ANALYSIS
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4.1.9 ACP Packet
Decodes and displays ACP Packet of the HDMI input.
ACP stands for Audio Content Protection, and refers to the information for the copyright protection of audio sent
by the transmitter which is input.
The display method is as follows.
Mouse
operation
Right-click → left-click ANALYZE → left-click ACP Packet
Unit operation
Press the ANALYZE key.
→ press L CLICK over ACP Packet
Press R CLICK → press L CLICK over ANALYZE
Also, you can switch between HEX and GUI display by right-clicking over the window and then clicking HEX<-
>GUI.
The ACP Packet display items when GUI display are as follows.
*1 is displayed when ACP Type of DVD Audio, and *2 is displayed when ACP Type is Super Audio CD.
Displayed item
Description
Status Change
Presence or absence of changing after pressing "Clear"
Packet Type Code
04 H
ACP_Type
Generic Audio
IEC60958-Identified Audio
DVD Audio*1
Super Audio CD*2
Reserved
*1
DVD-Audio_Type
XX H
Copy_Permission
Copy Freely
reserved
audio_copy_number
Can’t copy
Copy_Number
Number of permitted copies is '1'
Number of permitted copies is '2'
Number of permitted copies is '4'